JP4885674B2 - Trimming blade - Google Patents

Description

  The present invention relates to a trimming blade, and more particularly to a trimming blade that does not cause a trimming failure when an aerosol container is cut with a new blade that has been polished or cut due to damage to the cutting edge.

Conventionally, as shown in FIG. 6, in a manufacturing process of an aerosol container, a trimming blade 50 as shown in FIG. 5 is attached to a trimming device (hereinafter referred to as “trimmer”) 52 with a bolt or the like. The blade 50 is fixed with an appropriate curvature in accordance with the set turning radius of the turntable 55. And the aerosol container 51 is trimmed at the front-end | tip part, the whole periphery contacts the blade 50. FIG. The aerosol container 51 is inserted and held in a mandrel 54 provided at regular intervals along the outer periphery of the turntable 55. That is, the aerosol container 51 is fixed to the outer periphery of the mandrel 54 that moves along an arc locus. As the turntable 55 rotates, the aerosol container 51 held by the mandrel 54 approaches the trimming blade 50 of the trimmer 52, and the aerosol container 51 is simultaneously rotated by the mandrel 54. Cutting is started with the blade edge 56 at the left end of the blade 50, and then the trimming of the tip of the aerosol container 51 is finished with the blade edge 56 at the center and finally with the blade edge 56 at the right end.
JP-A-62-134127

  However, the blade 56 at the extended portion of the blade lower surface X0 of the conventional blade 50 may be damaged during use, as shown in FIG. In this case, it is possible to form a new blade edge 57 by polishing or cutting in parallel with the blade lower surface X0 to produce an arbitrary new surface X1, but when this re-polishing operation is performed, FIG. As shown, the curvature r1 of the new cutting edge 57 is larger than the curvature r0 of the original cutting edge 56. When the curvature r1 of the new cutting edge 57 becomes larger than the curvature r0 of the original cutting edge 56, the cutting start 57a and cutting end 57b of the new cutting edge 57 of the blade 50 do not come into contact with the aerosol container 51. There was a drawback that the container 51 was not completely cut and a trimming failure occurred. Therefore, we asked a specialized manufacturer for re-grinding work. In the specialized manufacturer, re-polishing work was carried out by a special method, and work was performed to obtain the same curvature r0 as the original blade curvature. Needed effort and tremendous cost.

The reason why the curvature r1 of the new blade 57 is larger than the curvature r0 of the initial blade 56 is that the conventional trimming blade 50 is located at the extended portion of the blade lower surface X0 as shown in FIG. The curvature of 56 is r0, parallel to the blade lower surface X0, arbitrarily polished or cut, and the curvature of the new cutting edge 57 positioned at the extended part of the new surface X1 is r1, further parallel to the blade lower surface X0, optionally polished Alternatively, if the curvature of the new cutting edge 59 located at the extended portion of the new cut surface X2 is r2, the curvature becomes r0 <r1 <r2, respectively, and the curvature increases so that the curvature increases as it goes upward. This is because the inclined surface 58 is formed. That is, Z1 (mnop), Z2 (qrst), Z3 (uxyw), and the line mn, the line plane qr, and the line ux, which are each arbitrarily cut unit surfaces shown in FIG. This is because the blade inclined surface 58 is formed.
The present invention has been made by paying attention to such a conventional problem. When the cutting edge is damaged, the blade 50 is polished or cut to form a new blade, and an aerosol container is formed. An object of the present invention is to provide a trimming blade that does not cause trimming defects even when cut.

  In order to solve this problem, the solving means of the invention described in claim 1 is a trimming blade for cutting a cylindrical object at the blade edge, and the curvature of the blade edge of the blade inclined surface located at the extended portion of the blade lower surface. A trimming blade characterized in that the curvature of the new blade tip of the blade inclined surface located at the extended portion of the surface polished or cut arbitrarily in parallel with the blade lower surface is equal. As described above, when the blade inclined surface having the same curvature is polished and cut, even when a new blade edge is formed, the curvature of the blade edge does not change, so that trimming failure does not occur even if the aerosol container is cut. . Therefore, the re-grinding work can be performed easily and quickly by a general-purpose surface grinder in the company, so that it can be easily polished and cut, saving time and cost from requesting external specialists. Can be reduced.

  According to a second aspect of the present invention, there is provided a container manufacturing method characterized in that, in the container manufacturing process, the container is held and the container is revolved and rotated to trim the opening of the container. is there. Since it can be easily applied to the in-line trimmer in the container manufacturing process, the repair cost of the container manufacturing apparatus can be reduced.

  According to a third aspect of the present invention, there is provided a method for producing a container, wherein the container is one selected from an aerosol container, a metal bottle container, a resin bottle container, and a tube container. In the container manufacturing process, the cylindrical portion of the container can be easily cut.

   According to a fourth aspect of the present invention, there is provided a pipe manufacturing method characterized in that, in the pipe manufacturing process, the pipe is cut by holding and revolving and rotating the pipe. In the pipe manufacturing process, the tip of the pipe can be easily cut.

Even if the blade for trimming of the present invention is polished or cut due to damage to the blade edge, the curvature of the blade edge does not change, so even if the blade edge is damaged, it can be re-polished by a general-purpose surface grinder in the company. As a result, a new cutting edge can be formed easily and quickly. And since the curvature of a blade edge | tip does not change, even if it cuts an aerosol container with a new blade, it has the effect that a trimming defect does not arise.

  Embodiments of the present invention will be described with reference to the drawings.

  FIGS. 1A, 1B and 1C are drawings showing an embodiment of the present invention. The present invention provides a new surface A1 that is arbitrarily polished or cut parallel to the curvature of the blade tip 4 of the blade inclined surface 3 located at the extended portion of the surface A0 of the blade lower surface 2 of the blade 1 and the surface A0 of the blade lower surface 2. The curvature of the new cutting edge 7 of the blade inclined surface 3 located at the extended portion is equal. Accordingly, the curvature of the new cutting edge 7 in the new surface A1 polished or cut parallel to the surface A0 of the blade lower surface 2 and the curvature of the cutting edge 8 in the new surface A2 are always equal to the curvature of the original cutting edge 4. It is configured.

  The feature of the blade 1 according to the present invention is that in FIG. 1 (a), arbitrary cutting unit planes B1 (abcd), B2 (efgh), B3 (ijkl) and the lines ab, ef, and ij are all parallel. The blade inclined surface 3 is configured so that the distance from the center O is all set to R0. Similarly, in FIG. 1B, the arbitrary cutting unit surfaces C1, C2, and C3 are also configured to be all parallel. Furthermore, in FIG.1 (c), the blade inclined surface 3 is comprised so that all arbitrary cutting unit surfaces D1, D2, and D3 may become parallel. As a result of this configuration, the curvature of the cutting edge 4 on the surface A0 on the lower surface 2 of the blade, the curvature of the cutting edge 7 on the new surface A1 that is arbitrarily polished or cut, and the curvature of the cutting edge 8 on the new surface A2 are all equal to R0. Become.

  Therefore, as shown in FIG. 2, the aerosol container 12 held by the mandrels 11 provided at equal intervals along the outer periphery of the turntable 10 is used for trimming the trimmer 13 when the turntable 10 rotates. The blade 1 is approached. Then, as shown in FIG. 3, the tip portion 12 a of the aerosol container 12 is cut by the cutting edge 4 of the blade 1 in contact with the blade 1. And when the blade 1 is broken, for example, when it is polished to a new surface A1 up to A1 in FIG. 1B, the curvature of the new blade edge 7 is as shown in FIG. 4, the aerosol container 12 shown in FIGS. 4A, 4B, and 4C has a cutting edge 7a, a center portion 7b, and a cutting end 7c of a new blade edge 7, and the aerosol container 12 has a cutting edge 7a. Abuts securely. Therefore, the aerosol container 12 is cut | disconnected reliably. Therefore, the trimming failure of the aerosol container 12 can be prevented.

  The trimming blade according to the present invention can reliably cut the tip portion, bottom portion, or arbitrary body portion of a container in the manufacturing process of an aerosol container, a metal bottle container, a resin bottle container, or a tube container. Furthermore, when cutting metal pipes other than containers, resin pipes, etc., a cylindrical object can be cut in the same way by combining with a device that holds one end of the pipe and a rotating device. The present invention can be widely applied to any product having a shaped object.

The perspective view (a) (b) (c) which shows the Example of the blade for trimming concerning this invention. The front view which shows the state which has cut | disconnected the aerosol container using the blade for trimming which concerns on this invention. The side view which shows the state which has cut | disconnected the aerosol container using the blade for trimming which concerns on this invention. The front view which shows the state which has cut | disconnected the aerosol container in the Example which concerns on this invention (a) (b) (c). The side view which shows the conventional blade for trimming. The front view which shows the state which has cut | disconnected the aerosol container with the conventional blade for trimming. The perspective view which shows the conventional blade for trimming.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Blade 2 Blade lower surface 3 Blade inclined surface 4 Blade edge 7 8 New blade edge 12 Aerosol container A0 Surface A1 A2 New surface R0

Claims (4)

  Trimming blade that cuts a cylindrical object at the blade tip, and the curvature of the blade tip of the blade inclined surface located at the extended portion of the blade lower surface and the extended portion of the surface that is optionally polished or cut parallel to the blade lower surface A trimming blade characterized in that the curvature of the new blade edge of the blade inclined surface located at is equal.   Using the trimming blade according to claim 1, in the container manufacturing process, holding the one end of the container and revolving and rotating the container to trim the opening of the container Manufacturing method. The container manufacturing method according to claim 2, wherein the container is one selected from an aerosol container, a metal bottle container, a resin bottle container, and a tube container.   A method of manufacturing a pipe using the trimming blade according to claim 1, wherein the pipe is cut by holding and revolving and rotating the pipe in the pipe manufacturing process.

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